97906499847 has 64 divisors (see below), whose sum is σ = 157781232000. Its totient is φ = 59644615680.

The previous prime is 97906499839. The next prime is 97906499869. The reversal of 97906499847 is 74899460979.

97906499847 is a `hidden beast` number, since 9 + 7 + 90 + 6 + 499 + 8 + 47 = 666.

It is not a de Polignac number, because 97906499847 - 2³ = 97906499839 is a prime.

It is a super-2 number, since 2×97906499847² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97906499827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16366597 + ... + 16372577.

It is an arithmetic number, because the mean of its divisors is an integer number (2465331750).

Almost surely, 2^97906499847 is an apocalyptic number.

97906499847 is a deficient number, since it is larger than the sum of its proper divisors (59874732153).

97906499847 is a wasteful number, since it uses less digits than its factorization.

97906499847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6465 (or 6459 counting only the distinct ones).

The product of its (nonzero) digits is 246903552, while the sum is 72.

The spelling of 97906499847 in words is "ninety-seven billion, nine hundred six million, four hundred ninety-nine thousand, eight hundred forty-seven".